Just use your existing transport if it still works and add a reclocker like the Synchro-Mesh. This will put you in the $10K transport performance range for only $599-$1400.
Then, read all of the audiostream.com Recommended - "Greatest Bits" on DACs for each year. These guys pick the best DACs. They have good systems. You can rely on their opinions. I am not affiliated.
Steve N.
Empirical Audio